Studies on plasma sprayed bu-layered ceramic coating on bio-medical Ti-13Nb-13Zr alloy

Sathish, S and Geetha, M and Aruna, ST and Balaji, N and Rajam, KS and Asokamani, R (2011) Studies on plasma sprayed bu-layered ceramic coating on bio-medical Ti-13Nb-13Zr alloy. Ceramic International, 37. pp. 1333-1339.

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Abstract

Biomedical Ti alloys are prone to undergo degradation due to the combined effect of wear and corrosion. To overcome these problems, surface modification techniques are being used. In this paper, the biomedical Ti alloy Ti–13Nb–13Zr was plasma sprayed with nanostructured Al2O3–13 wt%TiO2, yttria stabilized zirconia powders and bilayer containing alternate layers of the two coatings to improve the corrosion resistance and microhardness of the substrate. The plasma sprayed coatings were characterized by X-ray diffraction, scanning electron microscopy and Raman spectroscopy. The microstructure, microhardness and surface roughness of the coatings were investigated. The corrosion resistance of the coatings was studied in simulated body conditions. The results show improved corrosion resistance for the bilayered coating compared to the individual plasma sprayed coatings on biomedical Ti–13Nb–13Zr alloy substrate.

Item Type:	Article
Uncontrolled Keywords:	B. X-ray methods; C. Corrosion; C. Hardness; D. ZrO2; E. Biomedical applications
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General) CHEMISTRY AND MATERIALS > Inorganic, Organic and Physical Chemistry
Depositing User:	Dr Aruna /ST S.T. Aruna
Date Deposited:	01 Jun 2011 11:09
Last Modified:	01 Jun 2011 11:09
URI:	http://nal-ir.nal.res.in/id/eprint/9191

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